National Museum of Nuclear Science & History
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
D. J. O'Leary worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Jessen worked at the 200 East Area at Hanford during the Manhattan Project.
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.
